./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --architecture 32bit


--------------------------------------------------------------------------------


Checking for data races
Using default analysis
Version efd9311c
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) )

 --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4
--- Real Ultimate output ---
This is Ultimate 0.2.2-dev-efd9311-m
[2022-04-18 18:41:59,312 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-04-18 18:41:59,313 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-04-18 18:41:59,339 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-04-18 18:41:59,341 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-04-18 18:41:59,342 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-04-18 18:41:59,343 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-04-18 18:41:59,346 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-04-18 18:41:59,348 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-04-18 18:41:59,349 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-04-18 18:41:59,349 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-04-18 18:41:59,351 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-04-18 18:41:59,352 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-04-18 18:41:59,354 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-04-18 18:41:59,355 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-04-18 18:41:59,356 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-04-18 18:41:59,358 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-04-18 18:41:59,362 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-04-18 18:41:59,363 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-04-18 18:41:59,364 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-04-18 18:41:59,365 INFO  L181        SettingsManager]: Resetting HornVerifier preferences to default values
[2022-04-18 18:41:59,369 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-04-18 18:41:59,370 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-04-18 18:41:59,371 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-04-18 18:41:59,371 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-04-18 18:41:59,373 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-04-18 18:41:59,373 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-04-18 18:41:59,373 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-04-18 18:41:59,374 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-04-18 18:41:59,374 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-04-18 18:41:59,375 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-04-18 18:41:59,375 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-04-18 18:41:59,375 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-04-18 18:41:59,376 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-04-18 18:41:59,376 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-04-18 18:41:59,377 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-04-18 18:41:59,377 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-04-18 18:41:59,378 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-04-18 18:41:59,378 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-04-18 18:41:59,378 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-04-18 18:41:59,379 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-04-18 18:41:59,380 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-04-18 18:41:59,380 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf
[2022-04-18 18:41:59,398 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-04-18 18:41:59,399 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-04-18 18:41:59,399 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-04-18 18:41:59,399 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-04-18 18:41:59,400 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-04-18 18:41:59,400 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-04-18 18:41:59,400 INFO  L138        SettingsManager]:  * User list type=DISABLED
[2022-04-18 18:41:59,400 INFO  L136        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2022-04-18 18:41:59,400 INFO  L138        SettingsManager]:  * Explicit value domain=true
[2022-04-18 18:41:59,401 INFO  L138        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2022-04-18 18:41:59,401 INFO  L138        SettingsManager]:  * Octagon Domain=false
[2022-04-18 18:41:59,401 INFO  L138        SettingsManager]:  * Abstract domain=CompoundDomain
[2022-04-18 18:41:59,401 INFO  L138        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2022-04-18 18:41:59,401 INFO  L138        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2022-04-18 18:41:59,402 INFO  L138        SettingsManager]:  * Interval Domain=false
[2022-04-18 18:41:59,402 INFO  L136        SettingsManager]: Preferences of Sifa differ from their defaults:
[2022-04-18 18:41:59,402 INFO  L138        SettingsManager]:  * Call Summarizer=TopInputCallSummarizer
[2022-04-18 18:41:59,402 INFO  L138        SettingsManager]:  * Simplification Technique=POLY_PAC
[2022-04-18 18:41:59,403 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-04-18 18:41:59,403 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-04-18 18:41:59,403 INFO  L138        SettingsManager]:  * Check unreachability of error function in SV-COMP mode=false
[2022-04-18 18:41:59,403 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-04-18 18:41:59,403 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-04-18 18:41:59,404 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-04-18 18:41:59,404 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-04-18 18:41:59,404 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-04-18 18:41:59,404 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-04-18 18:41:59,404 INFO  L138        SettingsManager]:  * Check absence of data races in concurrent programs=true
[2022-04-18 18:41:59,405 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-04-18 18:41:59,405 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-04-18 18:41:59,405 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-04-18 18:41:59,405 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-04-18 18:41:59,405 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-04-18 18:41:59,406 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-04-18 18:41:59,406 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-18 18:41:59,406 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-04-18 18:41:59,406 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-04-18 18:41:59,406 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-04-18 18:41:59,406 INFO  L138        SettingsManager]:  * Trace refinement strategy=SIFA_TAIPAN
[2022-04-18 18:41:59,406 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-04-18 18:41:59,407 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-04-18 18:41:59,407 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2022-04-18 18:41:59,408 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-04-18 18:41:59,408 INFO  L138        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4
[2022-04-18 18:41:59,568 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-04-18 18:41:59,587 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-04-18 18:41:59,589 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-04-18 18:41:59,589 INFO  L271        PluginConnector]: Initializing CDTParser...
[2022-04-18 18:41:59,590 INFO  L275        PluginConnector]: CDTParser initialized
[2022-04-18 18:41:59,591 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i
[2022-04-18 18:41:59,638 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4f7ac2312/77f2e5049b6c4708a65b2bbdac33489c/FLAG5362221d7
[2022-04-18 18:42:00,062 INFO  L306              CDTParser]: Found 1 translation units.
[2022-04-18 18:42:00,063 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i
[2022-04-18 18:42:00,072 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4f7ac2312/77f2e5049b6c4708a65b2bbdac33489c/FLAG5362221d7
[2022-04-18 18:42:00,085 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4f7ac2312/77f2e5049b6c4708a65b2bbdac33489c
[2022-04-18 18:42:00,088 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-04-18 18:42:00,089 INFO  L131        ToolchainWalker]: Walking toolchain with 6 elements.
[2022-04-18 18:42:00,089 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2022-04-18 18:42:00,090 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2022-04-18 18:42:00,096 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2022-04-18 18:42:00,096 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,097 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb9817e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00, skipping insertion in model container
[2022-04-18 18:42:00,098 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,103 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2022-04-18 18:42:00,133 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2022-04-18 18:42:00,331 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189]
[2022-04-18 18:42:00,347 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-04-18 18:42:00,354 INFO  L203         MainTranslator]: Completed pre-run
[2022-04-18 18:42:00,383 WARN  L230   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i[30176,30189]
[2022-04-18 18:42:00,389 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2022-04-18 18:42:00,423 INFO  L208         MainTranslator]: Completed translation
[2022-04-18 18:42:00,424 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00 WrapperNode
[2022-04-18 18:42:00,424 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2022-04-18 18:42:00,425 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-04-18 18:42:00,425 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-04-18 18:42:00,425 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-04-18 18:42:00,429 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,443 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,456 INFO  L137                Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87
[2022-04-18 18:42:00,458 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-04-18 18:42:00,458 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-04-18 18:42:00,459 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-04-18 18:42:00,459 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-04-18 18:42:00,464 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,464 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,467 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,467 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,471 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,482 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,483 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,485 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-04-18 18:42:00,486 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-04-18 18:42:00,486 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-04-18 18:42:00,486 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-04-18 18:42:00,487 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ...
[2022-04-18 18:42:00,504 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-04-18 18:42:00,511 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
[2022-04-18 18:42:00,520 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-04-18 18:42:00,522 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-04-18 18:42:00,546 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2022-04-18 18:42:00,546 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2022-04-18 18:42:00,546 INFO  L130     BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2022-04-18 18:42:00,546 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2022-04-18 18:42:00,546 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2022-04-18 18:42:00,547 INFO  L130     BoogieDeclarations]: Found specification of procedure t_fun
[2022-04-18 18:42:00,547 INFO  L138     BoogieDeclarations]: Found implementation of procedure t_fun
[2022-04-18 18:42:00,547 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2022-04-18 18:42:00,547 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2022-04-18 18:42:00,547 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-04-18 18:42:00,547 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-04-18 18:42:00,548 WARN  L208             CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-04-18 18:42:00,653 INFO  L234             CfgBuilder]: Building ICFG
[2022-04-18 18:42:00,657 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-04-18 18:42:00,857 INFO  L275             CfgBuilder]: Performing block encoding
[2022-04-18 18:42:00,863 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-04-18 18:42:00,864 INFO  L299             CfgBuilder]: Removed 10 assume(true) statements.
[2022-04-18 18:42:00,868 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:00 BoogieIcfgContainer
[2022-04-18 18:42:00,868 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-04-18 18:42:00,870 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-04-18 18:42:00,870 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-04-18 18:42:00,872 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-04-18 18:42:00,872 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:42:00" (1/3) ...
[2022-04-18 18:42:00,873 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ce279b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:00, skipping insertion in model container
[2022-04-18 18:42:00,873 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (2/3) ...
[2022-04-18 18:42:00,873 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26ce279b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:00, skipping insertion in model container
[2022-04-18 18:42:00,873 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:00" (3/3) ...
[2022-04-18 18:42:00,874 INFO  L111   eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i
[2022-04-18 18:42:00,895 WARN  L147   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-04-18 18:42:00,895 INFO  L202   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-04-18 18:42:00,896 INFO  L161   ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations.
[2022-04-18 18:42:00,896 INFO  L504   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-04-18 18:42:00,934 INFO  L135    ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions.
[2022-04-18 18:42:00,967 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-18 18:42:00,972 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-18 18:42:00,972 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 11 error locations.
[2022-04-18 18:42:00,981 INFO  L116   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-04-18 18:42:00,989 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 129 places, 138 transitions, 284 flow
[2022-04-18 18:42:00,991 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 129 places, 138 transitions, 284 flow
[2022-04-18 18:42:00,992 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 129 places, 138 transitions, 284 flow
[2022-04-18 18:42:01,040 INFO  L129       PetriNetUnfolder]: 17/182 cut-off events.
[2022-04-18 18:42:01,041 INFO  L130       PetriNetUnfolder]: For 1/1 co-relation queries the response was YES.
[2022-04-18 18:42:01,045 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 17/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 509 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. 
[2022-04-18 18:42:01,049 INFO  L116        LiptonReduction]: Number of co-enabled transitions 4400
[2022-04-18 18:42:03,737 INFO  L131        LiptonReduction]: Checked pairs total: 10452
[2022-04-18 18:42:03,738 INFO  L133        LiptonReduction]: Total number of compositions: 126
[2022-04-18 18:42:03,744 INFO  L111   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 45 transitions, 98 flow
[2022-04-18 18:42:03,770 INFO  L133   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:03,772 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:03,776 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-04-18 18:42:03,776 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:03,776 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-04-18 18:42:03,777 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] ===
[2022-04-18 18:42:03,780 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:03,780 INFO  L85        PathProgramCache]: Analyzing trace with hash 16199287, now seen corresponding path program 1 times
[2022-04-18 18:42:03,786 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:03,788 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208662181]
[2022-04-18 18:42:03,788 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:03,789 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:03,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:42:03,926 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:42:03,926 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:42:03,927 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208662181]
[2022-04-18 18:42:03,927 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208662181] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:42:03,927 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:42:03,927 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:42:03,928 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458765766]
[2022-04-18 18:42:03,929 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:42:03,933 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:42:03,933 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:42:03,949 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:42:03,950 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:03,953 INFO  L87              Difference]: Start difference. First operand  has 314 states, 287 states have (on average 2.480836236933798) internal successors, (712), 313 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:04,025 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:42:04,025 INFO  L93              Difference]: Finished difference Result 258 states and 478 transitions.
[2022-04-18 18:42:04,026 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:42:04,027 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2022-04-18 18:42:04,027 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:42:04,038 INFO  L225             Difference]: With dead ends: 258
[2022-04-18 18:42:04,038 INFO  L226             Difference]: Without dead ends: 237
[2022-04-18 18:42:04,038 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:04,042 INFO  L913         BasicCegarLoop]: 9 mSDtfsCounter, 19 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:42:04,043 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 18 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:42:04,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 237 states.
[2022-04-18 18:42:04,084 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237.
[2022-04-18 18:42:04,085 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 237 states, 227 states have (on average 1.933920704845815) internal successors, (439), 236 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:04,086 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 439 transitions.
[2022-04-18 18:42:04,087 INFO  L78                 Accepts]: Start accepts. Automaton has 237 states and 439 transitions. Word has length 4
[2022-04-18 18:42:04,087 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:42:04,087 INFO  L478      AbstractCegarLoop]: Abstraction has 237 states and 439 transitions.
[2022-04-18 18:42:04,087 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:04,087 INFO  L276                IsEmpty]: Start isEmpty. Operand 237 states and 439 transitions.
[2022-04-18 18:42:04,093 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2022-04-18 18:42:04,097 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:04,097 INFO  L499         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1]
[2022-04-18 18:42:04,097 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-04-18 18:42:04,097 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] ===
[2022-04-18 18:42:04,098 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:04,098 INFO  L85        PathProgramCache]: Analyzing trace with hash -1587563832, now seen corresponding path program 1 times
[2022-04-18 18:42:04,098 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:04,099 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082895646]
[2022-04-18 18:42:04,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:04,099 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:04,123 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:42:04,124 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-04-18 18:42:04,139 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:42:04,154 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2022-04-18 18:42:04,154 INFO  L618         BasicCegarLoop]: Counterexample is feasible
[2022-04-18 18:42:04,156 INFO  L788   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining)
[2022-04-18 18:42:04,157 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining)
[2022-04-18 18:42:04,157 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining)
[2022-04-18 18:42:04,157 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining)
[2022-04-18 18:42:04,158 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining)
[2022-04-18 18:42:04,158 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining)
[2022-04-18 18:42:04,158 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining)
[2022-04-18 18:42:04,158 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining)
[2022-04-18 18:42:04,158 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining)
[2022-04-18 18:42:04,158 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining)
[2022-04-18 18:42:04,159 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining)
[2022-04-18 18:42:04,159 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-04-18 18:42:04,160 INFO  L719         BasicCegarLoop]: Path program histogram: [1, 1]
[2022-04-18 18:42:04,161 WARN  L232   ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-04-18 18:42:04,161 INFO  L504   ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances.
[2022-04-18 18:42:04,173 INFO  L135    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-04-18 18:42:04,175 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-18 18:42:04,175 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-18 18:42:04,175 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 15 error locations.
[2022-04-18 18:42:04,177 INFO  L116   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-04-18 18:42:04,177 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 184 transitions, 386 flow
[2022-04-18 18:42:04,178 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 184 transitions, 386 flow
[2022-04-18 18:42:04,178 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 170 places, 184 transitions, 386 flow
[2022-04-18 18:42:04,221 INFO  L129       PetriNetUnfolder]: 31/303 cut-off events.
[2022-04-18 18:42:04,221 INFO  L130       PetriNetUnfolder]: For 6/6 co-relation queries the response was YES.
[2022-04-18 18:42:04,223 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 317 conditions, 303 events. 31/303 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1031 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. 
[2022-04-18 18:42:04,236 INFO  L116        LiptonReduction]: Number of co-enabled transitions 13640
[2022-04-18 18:42:06,956 INFO  L131        LiptonReduction]: Checked pairs total: 58633
[2022-04-18 18:42:06,956 INFO  L133        LiptonReduction]: Total number of compositions: 153
[2022-04-18 18:42:06,957 INFO  L111   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 71 places, 82 transitions, 182 flow
[2022-04-18 18:42:07,203 INFO  L133   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:07,258 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:07,266 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-04-18 18:42:07,267 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:07,267 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-04-18 18:42:07,267 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] ===
[2022-04-18 18:42:07,268 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:07,269 INFO  L85        PathProgramCache]: Analyzing trace with hash 27652412, now seen corresponding path program 1 times
[2022-04-18 18:42:07,269 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:07,270 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428274636]
[2022-04-18 18:42:07,270 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:07,270 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:07,288 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:42:07,308 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:42:07,308 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:42:07,309 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428274636]
[2022-04-18 18:42:07,309 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428274636] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:42:07,309 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:42:07,309 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:42:07,309 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427670146]
[2022-04-18 18:42:07,310 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:42:07,310 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:42:07,311 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:42:07,311 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:42:07,311 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:07,339 INFO  L87              Difference]: Start difference. First operand  has 9783 states, 9631 states have (on average 3.4652684041117228) internal successors, (33374), 9782 states have internal predecessors, (33374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:07,488 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:42:07,488 INFO  L93              Difference]: Finished difference Result 9151 states and 25643 transitions.
[2022-04-18 18:42:07,488 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:42:07,489 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2022-04-18 18:42:07,489 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:42:07,531 INFO  L225             Difference]: With dead ends: 9151
[2022-04-18 18:42:07,531 INFO  L226             Difference]: Without dead ends: 9054
[2022-04-18 18:42:07,532 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:07,533 INFO  L913         BasicCegarLoop]: 33 mSDtfsCounter, 26 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2022-04-18 18:42:07,533 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 66 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2022-04-18 18:42:07,551 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9054 states.
[2022-04-18 18:42:07,768 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9054 to 9054.
[2022-04-18 18:42:07,790 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9054 states, 8943 states have (on average 2.8396511237839652) internal successors, (25395), 9053 states have internal predecessors, (25395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:07,829 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9054 states to 9054 states and 25395 transitions.
[2022-04-18 18:42:07,829 INFO  L78                 Accepts]: Start accepts. Automaton has 9054 states and 25395 transitions. Word has length 4
[2022-04-18 18:42:07,829 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:42:07,832 INFO  L478      AbstractCegarLoop]: Abstraction has 9054 states and 25395 transitions.
[2022-04-18 18:42:07,832 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:07,832 INFO  L276                IsEmpty]: Start isEmpty. Operand 9054 states and 25395 transitions.
[2022-04-18 18:42:07,833 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-04-18 18:42:07,833 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:07,833 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:42:07,833 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-04-18 18:42:07,834 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] ===
[2022-04-18 18:42:07,834 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:07,834 INFO  L85        PathProgramCache]: Analyzing trace with hash -1921850843, now seen corresponding path program 1 times
[2022-04-18 18:42:07,834 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:07,835 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844115041]
[2022-04-18 18:42:07,835 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:07,835 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:07,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:42:07,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:42:07,897 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:42:07,897 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844115041]
[2022-04-18 18:42:07,897 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844115041] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:42:07,897 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:42:07,898 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:42:07,898 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709759909]
[2022-04-18 18:42:07,898 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:42:07,898 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:42:07,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:42:07,899 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:42:07,899 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:07,899 INFO  L87              Difference]: Start difference. First operand 9054 states and 25395 transitions. Second operand  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:08,083 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:42:08,083 INFO  L93              Difference]: Finished difference Result 12547 states and 34036 transitions.
[2022-04-18 18:42:08,083 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:42:08,084 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-04-18 18:42:08,084 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:42:08,169 INFO  L225             Difference]: With dead ends: 12547
[2022-04-18 18:42:08,169 INFO  L226             Difference]: Without dead ends: 12511
[2022-04-18 18:42:08,169 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:08,170 INFO  L913         BasicCegarLoop]: 38 mSDtfsCounter, 51 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-18 18:42:08,170 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 51 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-18 18:42:08,198 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12511 states.
[2022-04-18 18:42:08,538 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12511 to 9354.
[2022-04-18 18:42:08,556 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9354 states, 9261 states have (on average 2.7816650469711695) internal successors, (25761), 9353 states have internal predecessors, (25761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:08,592 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9354 states to 9354 states and 25761 transitions.
[2022-04-18 18:42:08,592 INFO  L78                 Accepts]: Start accepts. Automaton has 9354 states and 25761 transitions. Word has length 8
[2022-04-18 18:42:08,593 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:42:08,593 INFO  L478      AbstractCegarLoop]: Abstraction has 9354 states and 25761 transitions.
[2022-04-18 18:42:08,593 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:08,593 INFO  L276                IsEmpty]: Start isEmpty. Operand 9354 states and 25761 transitions.
[2022-04-18 18:42:08,594 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2022-04-18 18:42:08,594 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:08,594 INFO  L499         BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1]
[2022-04-18 18:42:08,594 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-04-18 18:42:08,635 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] ===
[2022-04-18 18:42:08,636 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:08,636 INFO  L85        PathProgramCache]: Analyzing trace with hash 163616524, now seen corresponding path program 1 times
[2022-04-18 18:42:08,636 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:08,636 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696378177]
[2022-04-18 18:42:08,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:08,636 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:08,661 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:42:08,662 INFO  L352             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2022-04-18 18:42:08,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2022-04-18 18:42:08,707 INFO  L130   FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace
[2022-04-18 18:42:08,707 INFO  L618         BasicCegarLoop]: Counterexample is feasible
[2022-04-18 18:42:08,708 INFO  L788   garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining)
[2022-04-18 18:42:08,708 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining)
[2022-04-18 18:42:08,708 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining)
[2022-04-18 18:42:08,708 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining)
[2022-04-18 18:42:08,708 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining)
[2022-04-18 18:42:08,709 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining)
[2022-04-18 18:42:08,709 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining)
[2022-04-18 18:42:08,709 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining)
[2022-04-18 18:42:08,709 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining)
[2022-04-18 18:42:08,709 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining)
[2022-04-18 18:42:08,709 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining)
[2022-04-18 18:42:08,710 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining)
[2022-04-18 18:42:08,710 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining)
[2022-04-18 18:42:08,710 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining)
[2022-04-18 18:42:08,710 INFO  L788   garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining)
[2022-04-18 18:42:08,710 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-04-18 18:42:08,711 INFO  L719         BasicCegarLoop]: Path program histogram: [1, 1, 1]
[2022-04-18 18:42:08,711 WARN  L232   ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis
[2022-04-18 18:42:08,711 INFO  L504   ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances.
[2022-04-18 18:42:08,724 INFO  L135    ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2022-04-18 18:42:08,725 INFO  L339      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-04-18 18:42:08,725 INFO  L340      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP
[2022-04-18 18:42:08,725 INFO  L341      AbstractCegarLoop]: Starting to check reachability of 19 error locations.
[2022-04-18 18:42:08,727 INFO  L116   etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation.
[2022-04-18 18:42:08,727 INFO  L131   etLargeBlockEncoding]: Starting large block encoding on Petri net that has 211 places, 230 transitions, 490 flow
[2022-04-18 18:42:08,728 INFO  L110        LiptonReduction]: Starting Lipton reduction on Petri net that has 211 places, 230 transitions, 490 flow
[2022-04-18 18:42:08,728 INFO  L74            FinitePrefix]: Start finitePrefix. Operand has 211 places, 230 transitions, 490 flow
[2022-04-18 18:42:08,780 INFO  L129       PetriNetUnfolder]: 50/469 cut-off events.
[2022-04-18 18:42:08,780 INFO  L130       PetriNetUnfolder]: For 19/19 co-relation queries the response was YES.
[2022-04-18 18:42:08,786 INFO  L84            FinitePrefix]: Finished finitePrefix Result has 497 conditions, 469 events. 50/469 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1780 event pairs, 1 based on Foata normal form. 0/391 useless extension candidates. Maximal degree in co-relation 311. Up to 16 conditions per place. 
[2022-04-18 18:42:08,806 INFO  L116        LiptonReduction]: Number of co-enabled transitions 26664
[2022-04-18 18:42:12,441 INFO  L131        LiptonReduction]: Checked pairs total: 126607
[2022-04-18 18:42:12,441 INFO  L133        LiptonReduction]: Total number of compositions: 185
[2022-04-18 18:42:12,442 INFO  L111   iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 97 places, 113 transitions, 256 flow
[2022-04-18 18:42:18,831 INFO  L133   iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result  has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:19,295 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:19,295 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 5
[2022-04-18 18:42:19,295 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:19,295 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1]
[2022-04-18 18:42:19,296 INFO  L403      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] ===
[2022-04-18 18:42:19,296 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:19,296 INFO  L85        PathProgramCache]: Analyzing trace with hash 41816738, now seen corresponding path program 1 times
[2022-04-18 18:42:19,297 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:19,297 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047800531]
[2022-04-18 18:42:19,297 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:19,297 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:19,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:42:19,327 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:42:19,327 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:42:19,328 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047800531]
[2022-04-18 18:42:19,328 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047800531] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:42:19,328 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:42:19,328 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:42:19,328 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943993767]
[2022-04-18 18:42:19,328 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:42:19,328 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:42:19,329 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:42:19,329 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:42:19,329 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:19,726 INFO  L87              Difference]: Start difference. First operand  has 238599 states, 237762 states have (on average 4.615123526888233) internal successors, (1097301), 238598 states have internal predecessors, (1097301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:23,038 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:42:23,038 INFO  L93              Difference]: Finished difference Result 222967 states and 835279 transitions.
[2022-04-18 18:42:23,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:42:23,039 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4
[2022-04-18 18:42:23,039 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:42:25,226 INFO  L225             Difference]: With dead ends: 222967
[2022-04-18 18:42:25,226 INFO  L226             Difference]: Without dead ends: 222585
[2022-04-18 18:42:25,227 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:25,227 INFO  L913         BasicCegarLoop]: 47 mSDtfsCounter, 26 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-18 18:42:25,227 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 94 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-18 18:42:26,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 222585 states.
[2022-04-18 18:42:34,134 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 222585 to 222585.
[2022-04-18 18:42:34,521 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 222585 states, 221973 states have (on average 3.757258765705739) internal successors, (834010), 222584 states have internal predecessors, (834010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:36,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 222585 states to 222585 states and 834010 transitions.
[2022-04-18 18:42:36,459 INFO  L78                 Accepts]: Start accepts. Automaton has 222585 states and 834010 transitions. Word has length 4
[2022-04-18 18:42:36,459 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:42:36,459 INFO  L478      AbstractCegarLoop]: Abstraction has 222585 states and 834010 transitions.
[2022-04-18 18:42:36,459 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:36,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 222585 states and 834010 transitions.
[2022-04-18 18:42:36,460 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2022-04-18 18:42:36,460 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:36,460 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:42:36,460 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-04-18 18:42:36,460 INFO  L403      AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] ===
[2022-04-18 18:42:36,460 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:36,460 INFO  L85        PathProgramCache]: Analyzing trace with hash 13530475, now seen corresponding path program 1 times
[2022-04-18 18:42:36,461 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:36,461 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238733338]
[2022-04-18 18:42:36,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:36,461 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:36,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:42:36,493 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:42:36,493 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:42:36,493 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238733338]
[2022-04-18 18:42:36,493 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238733338] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:42:36,494 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:42:36,494 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:42:36,494 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640176465]
[2022-04-18 18:42:36,494 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:42:36,494 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:42:36,494 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:42:36,495 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:42:36,495 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:36,495 INFO  L87              Difference]: Start difference. First operand 222585 states and 834010 transitions. Second operand  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:40,965 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2022-04-18 18:42:40,965 INFO  L93              Difference]: Finished difference Result 360725 states and 1300752 transitions.
[2022-04-18 18:42:40,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-04-18 18:42:40,966 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2022-04-18 18:42:40,966 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2022-04-18 18:42:43,472 INFO  L225             Difference]: With dead ends: 360725
[2022-04-18 18:42:43,473 INFO  L226             Difference]: Without dead ends: 360608
[2022-04-18 18:42:43,473 INFO  L912         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:43,474 INFO  L913         BasicCegarLoop]: 53 mSDtfsCounter, 70 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2022-04-18 18:42:43,474 INFO  L914         BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 73 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2022-04-18 18:42:45,163 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 360608 states.
[2022-04-18 18:42:54,122 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 360608 to 257666.
[2022-04-18 18:42:54,710 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 257666 states, 257092 states have (on average 3.6817753955782364) internal successors, (946555), 257665 states have internal predecessors, (946555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:57,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 257666 states to 257666 states and 946555 transitions.
[2022-04-18 18:42:57,479 INFO  L78                 Accepts]: Start accepts. Automaton has 257666 states and 946555 transitions. Word has length 8
[2022-04-18 18:42:57,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2022-04-18 18:42:57,479 INFO  L478      AbstractCegarLoop]: Abstraction has 257666 states and 946555 transitions.
[2022-04-18 18:42:57,480 INFO  L479      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-04-18 18:42:57,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 257666 states and 946555 transitions.
[2022-04-18 18:42:57,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2022-04-18 18:42:57,481 INFO  L491         BasicCegarLoop]: Found error trace
[2022-04-18 18:42:57,481 INFO  L499         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2022-04-18 18:42:57,481 WARN  L460      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-04-18 18:42:57,481 INFO  L403      AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] ===
[2022-04-18 18:42:57,483 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-04-18 18:42:57,483 INFO  L85        PathProgramCache]: Analyzing trace with hash 1653655734, now seen corresponding path program 1 times
[2022-04-18 18:42:57,484 INFO  L118   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2022-04-18 18:42:57,484 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050386759]
[2022-04-18 18:42:57,484 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-04-18 18:42:57,484 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-04-18 18:42:57,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-04-18 18:42:57,501 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-04-18 18:42:57,501 INFO  L136   FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace
[2022-04-18 18:42:57,501 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050386759]
[2022-04-18 18:42:57,501 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050386759] provided 1 perfect and 0 imperfect interpolant sequences
[2022-04-18 18:42:57,501 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-04-18 18:42:57,502 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-04-18 18:42:57,502 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054742174]
[2022-04-18 18:42:57,502 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-04-18 18:42:57,502 INFO  L554      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-04-18 18:42:57,502 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2022-04-18 18:42:57,502 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-04-18 18:42:57,503 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-04-18 18:42:57,503 INFO  L87              Difference]: Start difference. First operand 257666 states and 946555 transitions. Second operand  has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)